Tank-car.



G. H. GOYLE.

TANK OAR.

APPLICATION FILED FEB. a, 1913.

1,089,535, Patented Mar. 10, 1914.

COLUMBIA PLANCIORAPH 120., WASHINGTON u c CHARLES H. COYLE, 0F CLYDE, ILLINOIS.

TANK-CAR.

nceaase.

Specification of Letters Patent.

Application filed February 3, 1913.

Patented Mar. Ml, role. Serial No. 745,851.

To all whom it may concern Be it known that I, CHARLES H. GOYLE, a citizen of the United States, residing at Clyde, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Tank-Cars, of which the following is a specification.

In the manufacture of tank cars such as are used to ship liquids in bulk on railroads and the like a great many efforts have been made to attach the tank to the supporting frame in such manner that it might be firmly held against displacement and still be free to expand and contract under the influence of changes in temperature. One way in which this has been done is to form at either end of the supporting frame or truck a bumper between which and the end of the tank a cushion of wood or other more or less yielding and elastic material is firmly packed. This cushion is expected to give when the tank expands and to hold the tank against physical displacement when the car is bumped about the yards or under circumstances when the velocity of the tank and the truck is violently changed in direction or magnitude. This works well enough when the blocks are new but soon the wood bumper or cushion becomes worn away and the tank will charge down upon the remainder of it and upon the metal bumper and finally the head of the tank will become battered in because the area of contact between the head of the tank and the bumper or cushion is comparatively small and the resistance of the tank head owing to its shape is comparatively low.

In my invention, instead of attempting to prevent the longitudinal displacement of the tank on the frame, I allow for it, facilitate it and take steps to negative its destructive features and, with this end in view, I mount the tank slidably upon the frame and protect the ends of the tank against rupture such as might be caused by their coming in contact with the holding bumpers or buffers on the frame.

My invention is illustrated diagrammatically in the accompanying drawings, where 1n- Figure 1 is a side elevation in part section with parts broken away; Fig. 2 is a detailed end elevation with parts omitted; Fig. 3 is a detail side elevation in modified form in part section.

Like parts are indicated by like letters throughout the several figures.

A A are car trucks of the usual type.

B B are channels forming the usual type of car frame or body supported on the trucks A A.

G is a supporting buffer or bumper provided with the downwardly depending member C riveted to the channels B B and the upwardly extending member C projecting upwardly from the middle thereof. The reinforcing inclined members C lead up wardly from the base of the buffer C to reinforce the wall C at its back.

D is a cylindrical tank supported upon the frame and slidably mounted in the cradles lg lg held in position by the holding straps E is a shoe riveted to the end of the tank and inclosing a portion of the ends of the side plates. This shoe is rigid and conforms closely to the contour of the tank. It is provided with a bearing surface E which may slide upon the base of the bumper C and with the contact surface E which may strike against the surface C It will be noted that the over all length of the tank and the shoes is less than the distance between the surfaces C so as to leave suflicient clearance to provide for the expansion of the tank. When the car is coupled onto a train and knocked back and forth the tank will slide back and forth on the frame until the shoe contacts the bumper. When this occurs the load is distributed over the entire end of the tank and the ends of the side walls and no harm is done. The shoe is a rigid, stiff, reinforcing member and it strikes a rigid, stiff buffer. The contact between them is a long plane at right angles to the axis of the tank. There is no dis torting effect.

In the modified form shown in Fig. 8 the buffer F is provided with cylindrical flanges F bolted to the channels B and from the buffer F projects upwardly a wall F having an inclined surface F from the upper extremity of which projects the vertical buffer surface F The shoe G rigidly attached to the end of the tank is provided with a surface G slidably in contact with the upper surface of the buffer F, with the inclined surface G slidably in contact with the surface F and the vertical surface G which may contact the surface F In this form when the violent movement of truck and tank causes the tank to shift on the truck or frame it will slide up the inclined surface and the weight of the tank will tend to damp the longitudinal displacement which will finally be stopped by contact of the shoe against the separate vertical wall.

it will be evident that, while I have shown in my drawin 's an operative device, still many changes might be made in size, shape and arrangement of parts without departing materially from the spirit of my invention and I wish, therefore, that my drawings be regarded as in a sense diagrammatic.

1. A tank car comprising a frame and a tank provided at either end with a rigid shoe extending across the end of the tank at the bottom inclosing a portion of the end of the side plates and conforming closely to the contour of the tank, bumpers mounted one on either end of the frame in opposition to said rigid shoes, said shoes and bumpers being provided with opposed vertically disposed contact surfaces, said tank being mounted on and free to slide along the frame limited only in its movement therealong by said bumpers.

2. A tank car comprising a frame and a tank provided at either end with a rigid shoe extending across the end of the tank at the bottom inclosing a portion of the end of the side plates and conforming closely to the contour of the tank, bumpers mounted one on either end of the frame in opposition to said rigid shoes, said shoes and bumpers being provided with opposed vertically disposed contact surfaces, said tank being mounted on and free to slide along the frame limited only in its movement therealong by said bumpers said bumpers and shoes being normally out of contact one'with the other the distance between the bumpers being substantially equal to the over all distance between the contact surfaces of the shoes when the relative temperature of the tank is at a maximum compared to the temperature of the frame.

3. A tank car comprising a frame and a tank provided at either end with a rigid shoe extending across the end of the tank at the bottom inclosing a portion of the end of the side plates and conforming closely to the contour of the tank, bumpers mounted one on either end of the frame in opposition to said rigid shoes, said shoes and bumpers being provided with opposed vertically disposed contact surfaces, said tank being mounted on and free to slide along the frame limited only in its movement therealong by said bumpers said shoes and said bumpers being provided with upwardly and outwardly inclined surfaces in contact one with the other to guide the course of the shoe along the arm,

In testimony whereof, I my signature in the presence of two witnesses this 22nd day of January 1918.

CHARLES H. COYLE. l'vitnessesz MI NIn M. LIN A RE M DQR MU p e o h s p ten m be bta ned t ce t e'alii n assumes the 0 212 1 5 9 0! Estat we h ng n, 

